Winding frame for winding bobbins with cylindrical layering



Dec. 31, 1940. 'TRECKMANN 2,227,044.

WINDING FRAME FOR WINDING BOBBINS WITH CYLINDRICAL LAYERING Filed June 5, 1939 2 Sheets-Sheet l Dec. 31, 1940. H. TRECKMANN 2,227,044

WINDING FRAME FOR WINDING BOBBINS WITH CYLINDRICAL LAYERING Filed June 5, 1939 2 sheets-sheet 2 'IIIIIIIIIIIIIIIIIIIIIIIIIIIIII II/ patented Dec. 31, 1940 PATENT OFFICE l/VINDKNG FRAME FOR WINDING BOBBINS WITH CYLINDRICAL LAYERING lllan s Treckmann, Wuppertal-Barmen, Germany Application June 5, 1929, Serial No. 277,378 In Germany June 20, 1938 7 Claims. (01. 242-42) This inventionrelates to winding frames for winding bobbins with cylindrical layering.

Cop-winding machines are already knownin which the whole working operation is carried out automatically by suitable mechanical control means. The characteristic of the winding in such machines lies in that a conical winding surface is constantly displaced axially with respect to the bobbin tube. There exists in practice the neer for applying the advantages of the automatic method of operation also to such winding frames in which the winding is efiected not, as with cop-winding machines, in conical layers, but in which the empty bobbin tubes are wound with cylindrical layers. v

This invention has the purpose of providing a suitable device for attaining this result which takes account of the requirements on the winding of preferably cylindrical bobbin tubes and which, moreover, operates entirely automatically. The invention is applicable both to the so-called cross winding and also to parallel winding.

For this purpose, the invention is based on the known cop-winding machines in which, during the changing of bobbins, the yarn or thread guide carrier is drawn back into the plane of the spindle stub, the said guide carrier being arranged eouplable and uncouplable on the reciprocating traverse rod and being drawn back after the completion of the bobbin to be wound by means of a power storage device into the initial position in front of the spindle stub so that the thread drawn down by the falling or descending bobbin is clamped between the spindle stub and the new bobbin and is thereafter cut in known manner. On the restarting of the machine with the new bobbin, the coupling part of the thread guide carrier, owing to the fact that the latter is supported against the rearward stop, slides during the first rearward movement of the traverse rod over the threads thereof and only engages therewith at the moment when the traverse rod begins its first forward movement. As the bobbin spindle is already rotating during this first rearward movement of the traverse rod, a certain amount of material is Wound at one position. This amount 50 of material is dependent on the relative transmission between the eccentric shalt and the bobbin splndle.

In the known automatic cop-winding machines in which the bobbins are wound with a 68 constantly progressing inclined surface, this characteristic of the commencement of the winding is not troublesomely noticeable but it is in machines in which the bobbin tube to be wound is wound with approximately the same traverse length from the commencement to the end of the winding operation and in which above all, for example, in bobbinsintended for the market, value is laid on external appearance. Bobbin tubes of cylindrical shape and of small diameter, in which the winding of the material at one position during the running of the bobbin spindle appears subsequently on the surface of the finished wound tube as a ridge or irregularity oi the winding layers, come mainly under consideration.

In winding frames for the production of bobbins with cylindrical thread layering, it has already been proposed to displace the thread guide, after the completion of the winding, to one end of the bobbin for the purpose of clamping the thread and then to bring it back again into the starting position. In these prior proposed machines, it is, however, a question of group machines in which a larger number, for example twelve spindles, are driven and stopped or controlled as a unit. Such machines having a common control can be used economically only for uniform bobbin material of high tensile strength, but not for sensitive or delicate yarns in which the breaking ofwthe thread with consequent stopping of the machine have frequently to be reckoned with so that, in that case, the method of operation of the whole machine would be very uneconomical because, with each small breakdown, all the bobbin positions would be stopped.

Now,'the object of this invention is to overcome these faults and to make possible the, use of the above described thread control with simple means also with machines intended for working sensitive thread material and in which accordingly the individual bobbin spindles or pairs of spindles operate independently of one another.

This object is attained, in accordance with the invention, in that the control means are arranged directly at the individual bobbin positions and are so constructed that the thread guide, during the automatic change of the bobbin tubes, as in the above-mentioned cop-winding machines, for the purpose of attaining a more certain clamping of the thread, drawn along by the descending bobbin, between the spindle stub and the new bobbin tube, is first uncoupled from the traverse rod and drawn back into the plane of the spindle stub but then, in contradistinction to the known cop-winding machines, is returned before the further rotation of the bobbin spindle into that position on the traverse rod in which it was previously coupled to the latter, that is to say, the position which it occupied on the stopping of the bobbin spindles after the completion of the previous bobbin. Moreover, the arrangement is such that the thread guide can be uncoupled from the traverse rod at any desired position of the traverse and can be coupled thereto at the same position before restarting of the machine according to at which thread guide position the stopping and restarting of the bobbin spindles is efiected. In this way, a guarantee is given that the movement of the traverse rod is effective at the same moment at which the bobbin spindle commences to rotate.

Consequently, the thread is arranged on the new bobbin from the clamping position about axially on" the bobbin tube up to that position at which the uniform winding commences, that is to say, an accurately cylindrical layering is produced and any undesirable thread stacking at the commencement of the winding operation is avoided.

In order that the invention may be fully understood, I shall now describe one embodiment thereof by reference to the accompanying drawings which show the essential parts of a winding frame embodying the invention, and in which:

Fig. 1 is a side elevation of the frame, the parts being shown in the position in which, after a new bobbin has been inserted, the machine is about to restart.

Fig. 2 is a plan view showing the parts in the same position on a two-spindle winding frame, a common thread guide carrier being arranged between two bobbin spindles,

Fig. 3 shows the parts at the moment when the bobbin is freed at the end of the winding operation and drops into the collecting vessel or container, and

Fig. 4 shows the device at the instant when the thread guide carrier is pressed into the starting position and is held there by a locking pawl.

Referring to the drawings, I indicates the oil casing containing, in known manner, the driving pinions of the winding frame from which the bobbin spindle 3, provided at the front thereof with a centre 2, projects outwardly.

Opposite to the bobbin spindle is located a holder 5, likewise provided with a centre 4, which holder is freely rotatably, but longitudinally displaceably,mounted in known manner in a hearing member 7 arranged upon the fixed machine frame 6. Between the free end of the bobbin spindle 3 and the holder 5 is tensioned on the centres 2, 4 the bobbin tube 8 to be wound so that, on the rotation of the bobbin spindle, the bobbin tube will be rotated.

The holder 5 is acted on by a spring arranged in the bearing sleeve 1 which tends to force the holder 5 towards the left against the bobbin tube 8, whilst the end of the holder 5, extending at the right from the bearing sleeve 1, is acted on by a lever, 45 which is fastened on the auxiliary control shaft 46 which is itself driven through a pair of pinions 44, 44 from the main control shaft 43. The coupling of the lever 45 with the end of the holder 5 is effected, moreover, by a transverse rod 41 which bears against a disc 48 secured to the holder. Both the main control shaft 43' and also the auxiliary control shaft 46 are rotatably mounted on the fixed machine frame 6 in a bearing block 49.

Above the bobbin tube 8 is arranged, parallel to the bobbin axis, a traverse rod I0 one end of which is guided in a fixed bearing member I I and the other end in the wall of the gear casing I by which it is driven, in known manner, in a reciprocating movement. The U-shaped thread guide carrier I2 is displaceably carried on this traverse rod and is, moreover, in addition, provided with a downwardly extending arm I4 engaging a fixed rod I5.

In the example shown, two bobbin spindles 3 and holders 5 are provided for each thread guide carrier, as can be seen from Figure 2, the thread guide carrier being arranged between these two bobbin spindles. On the same carrier I2 are swingably mounted two thread guides I6 and II which stand under the influence of a spring I8 and are thereby pressed down with their thread guide head 20, 2I on to the pertaining bobbin. The thread guide heads 20, II are provided on theiii pressure faces in the direction threadguide-hole to spindle stub, with a recess 22, 23 shown dotted in the drawings, for the purpose of assisting the correct guiding of the thread on starting the machine.

On the traverse rod III is fixedly clamped a cam 30 by means of a screw 3I so that it takes part in the reciprocating movement of the traverse rod. This cam is formed on its upper side with a nose 32 which is bevelled on one side and which co-operates with a. pawl 33 pivoted around a bolt 34 on the thread guide carrier I2. This pawl 33 is formed as an angle lever with a vertical limb 35 and is acted on by a spring 36 tending to hold the pawl in engagement with the cam 30. The thread guide carrier I2, moreover, is also acted on by a spring 31 carried on the traverse rod; which spring is supported at its left end against the fixed gear casing and at its right end presses the thread guide carrier against the end face of the cam 30 so that in this position the pawl 33 can embrace the nose 32 of the cam whereby a rigid but releasable coupling is effected between the thread guide carrier and the traverse rod.

In consequence, the thread guide is positively carried along in this position of the pawl by the reciprocating traverse rod. The length of movement or the traverse of the said rod is, moreover, variable in the known manner by a device arranged in the gear casing in accordance with the length of the bobbin tube to be wound. Moreover, in conformity with the particular bobbin tube length, the cam 30 can, by means of the adjusting screw, be adjusted on the traverse rod as is necessitated by the particular bobbin length.

Above the traverse rod I0 is longitudinally displaceably carried in the fixed bearing block opposite to the vertical limb 35 of the pawl 33 a push or press rod 40. This push rod is driven through a link M and lever 42 from the main control shaft 43 which, for its part, is connected by a known linkage, not illustrated, to the main drive of the machine.

On the opposite side of the thread guide carrier is arranged on the fixed gear casing I a locking pawl 50 which co-operates with an inclined free locking member 25 arranged on the thread guide carrier I2. The locking pawl 50 is secured to a shaft 53 carried in bearings 5|, 52, the rear end of which shaft is provided with a bent limb 54 with which co-operates a cam lever 56 arranged on the control shaft 55 in such a manner that,

by rotation of the cam shaft 55, the locking pawl can be raised from the lower position indicated in Figure 4 in order, if necessary, to release the locking member 25 of the thread guide carrier l2.

The above described device operates in the following manner:

When the bobbin spindle. 3 has been autoniatically brought to a standstill in the known manner after the winding of the bobbin tube 8 has been completed, the holders 5 are moved back into the position shown in Figure 3 thereby freeing the bobbin which falls into the collecting container. This operation takes place by the turning of the main control shaft 43 which acts through pinions 44, 44, lever 45, shaft 46, traverse rod 41, and disk 48, to withdraw the holder for freeing the bobbin. 'At the same time, the push or pressure rod 40' is moved under themfluence of the control shaft 43 through linkage 4|, 42 in the direction of the gear casing l and encounters, on its way, according to the particular position at which the thread guide carrier l2 has stopped on the disengagement of the drive after the completion of a bobbin, the vertical limb 35 of the pawl 33 (Fig. 3) which is turned by the rod 40 around its axis 34 until it comes into contactwith the stop 38. The thread guide carrier l2is thereby released from the cam 30 and can slide, under the pressure of the moving rod 40, along the traverse rod III in the direction of the gear casing I with simultaneous tensioning of the spring 31.

Fig. 4 shows the end position in which the thread 64, drawn along by the descending bobbin 8, lies exactly above the spindle stub so that the subsequent new bobbin can clamp'the thread 64 securely to the spindle fstub On reaching the end position, the locking pawl 50 engages over the nose or looking member 25 of the thread guide carrier [2 and looks it. The pawl 50 \is held up during the winding operation and is only lowered at the moment of the disengagement OF the machine after the winding Jg as been completed to enable it to act in the above described 5 manner. The pressure rod 40 now returns intoits initial position without taking with it the thread guide carrier I 2 against which the tension spring 3'! presses.- v

The introduction of the new bobbin tube, the

50 clamping of thethread 44 between the new bobbin and the spindle stub as well as the severing of the thread drawn along by the completed bobbin 8 can now be efiected in the known manner. During the further operation of automatically changing. the bobbin, the cam lever 56, owing to the rotation of the control shaft 55 which is connected in a manner not shown on the drawings with the engaging'mechanism of the bobbin spindle, presses on the right angled bent end 54 of the pawl shaft 53 and releases the locking of the thread guide carrier.

The thread guide carrier is thus displaced under the influence of the spring 31 again into the position S own in Fig. 1 into contact with the cam 30 of the traverse rod Ill so that the pawl 33 can fall under the influence of the spring 36 and effect the coupling of the thread guide with the traverse rod. At the same time, as can be seen from Fig. 1, the thread is drawn along from the clamping position thereof on the periphery of the fresh bobbin tube to be wound so that it lies on the bobbin tube substantially parallel to the axis thereof and, on the rotation of the bobbin tube, which now commences, and the simul- 75 taneous movement of the traverse rod, the winding of the bobbin tube is effected regularly, that is to say, in a uniformly cylindrical layering.

Naturally, the invention is not limited to the example illustrated, but various modifications are possible within the scope of the invention. In 5 particular, .the device can be used wholly or partly with suitable variation also in winding frames of a different kind. Moreover, the bobbin corescan, if desired, be provided on their ends with flanges such as, for example, is usual in 10 the case of braiding machines.

Finally, the traverse can also be varied, and

indeed, reduced during the winding operation in order thereby to produce a cylindrical winding with bevelled ends such as is desirable for many 15 purposes. r

I claim:

l. In a winding machine the combination comprising a traverse rod, a thread guide carrier, releasable means for coupling said thread guide '20 carrier. to'said traverse rod at an initial determinate position, mechanism actuated at-the termination of the wind to uncouple the thread guide carrier from the traverse rod and move it into a determinate retracted position, releasable hold- 25 ingmeans for holding the thread guide carrier in said retracted position and for releasing it preliminary to the restarting of the wind,- and meansacting preliminary to the restarting of the wind for restoring said thread guide carrier to its initial coupled position with said traverse rod when released from said holding means,

- 2. In a winding machine the combination comprising a traverse rod, a thread guide" carrier, releasable means for coupling said thread guide carrier to said traverse rod in 'an initial determinate adjusted position including a displaceable member borne by said thread guide carrier and an element on said-traverse rod with which said member has normal engagement, means for ad- 40 justably fixing said element to said traverse rod whereby it will lie positioned conformatory to particular length of bobbin, mechanism actuated atthe termination of the wind to uncouple'said thread guide carrier from the traverse rod 5 through displacement of the dlsplaceable member borne by the carrier and to move the carrier into a determinate retracted position, releasable holding meansfor holding. said thread guide carrier in said retracted position and for releasing it preliminary to the restarting of the wind,

and means acting preliminary to the restarting of the wind for restoring said thread guide carrier to its initial coupled position with said traverse rod when released from said holding means.

3. In a winding frame the combination comprising a traverse rod, 9. thread guide carrier,

- releasable means for coupling said thread guide .the traverse rod and move it into a retracted position including a pressure rod which acts on said displaceable member and presses said thread guide carrier into said retracted position, releas- 7 able means for holding' the thread guide carrier in said retracted position and for releasing it preliminary to the restarting of the wind, and means acting preliminary to the restarting of the wind for restoring said thread guide carrier to its initial coupled position with said traverse rod when released from said holding means.

4. In a winding machine the combination comprising a traverse rod, a thread guide carrier, releasable means for coupling said thread guide carrier to said traverse rod in an initial determinate position, mechanism actuated at the termination of the wind to uncouple the thread guide carrier from the traverse rod and move it into a retracted position adjacent the end of the bobbin spindle, releasable means including a catch for holding the thread guide carrier in said retracted position and for releasing it preliminary to the restarting of the wind, and means acting preliminary to the restarting of the wind for restoring said threadguide carrier to its initial coupled position with said traverse rod when released from said holding means comprising a spring arranged upon the traverse rod and tensioned by the thread guide carrienwhen moved into its said retracted position.

5. In a windingmachine the combination comprising a traverse rod, a thread guide carrier,

, releasable means for coupling said thread guide carrier to said traverseirod in an initial determinate position including a displaceable member borne by said thread guide carrier and by the displacement of which member said thread guide carrier is uncoupled from said traverse rod, mechanism actuated at the termination of the wind to uncouple the thread guide carrier from said traverse rod and move it into a retracted position adjacent the end of the bobbin spindle including a pressure rod which acts on said displaceable member and is effective over the wholerange of the length of the held bobbins, holding means including a releasable catch for holding the thread guide carrier in said retracted position and for releasing it preliminary to the restarting of the wind, and means acting preliminary to the restarting of the wind for restoring said thread guide carrier to its initial coupled position with said traverse rod when reto said'traverse rod whereby it will lie positioned conformatory to particular length of bobbin. mechanism actuated at the termination of the wind torelease said releasable bobbin holder for releasing said bobbin and to uncouple said thread guide carrier from said traverse rod and move it into retracted position including a pressure rod which acts on said displaceable member and is eifective over the whole range of the length of bobbins held in said machine, releasable holding means including a catch for holding the thread guide carrier in said retracted position and for releasing it preliminary to the restarting of the wind and means acting preliminary to the restarting of the wind for restoring said thread guide carrier to its initial coupled position with the traverse rod when released from said catch.

'7. In a winding machine having a spindle head i and in opposition thereto a releasable holder for holding a bobbin in place, the combination comprising a traverse rod, a thread guide carrier,

releasablemeans for coupling said carrier to said rod in an initial determinate adjusted position including a displaceable member borne by said thread guide carrier and an element on said traverse rod with which said member is normally engaged, means for adjustably fixing said element to said traverse rod whereby it will lie positioned ccnformatory to particular length of bobbin, releasable means including a catch for holding the thread guide in retracted position adjacent the spindle head and for releasing it in the operation of the machine, mechanism actuated in the operation of the machine to release said bobbin holding means for releasing a bobbin held between it and said head and to uncouple said thread guide carrier from said traverse bar I and move it into said retracted position including a pressure rod which acts on said displaceable member and is effective over the whole range of the length of bobbins held in said machine, said mechanism acting reversely to effect the restoration of said bobbin holding means for holding a freshly inserted bobbin and to return 'said pressure rod to the position from which it is moved, and means for restoring said thread guide carrier to its initial coupled position with the traverse rod when released from said catch.

HANS TRECKMANN, 

